| Melodious |
dulcet, musical, harmonious, sweet |
grating, dissonant, discordant, rancour |
| Mendacity |
falsehood, deception, perjury, perfidious |
probity, honesty, veracity, candour |
| Mercurial |
variable, changeable, unstable, erratic |
stable, constant, steady, steadfast |
| Meritorious |
commendable, admirable, deserving, praiseworthy |
unworthy, infamous, disreputable, culpable |
| Mettle |
courage, determination, stamina, spirit |
timidity, fear, cowardice, diffident |
| Minute |
diminutive, miniature, small, microscopic |
large, colossal, stupendous, immense |
| Miraculous |
marvellous, extraordinary, astounding, amazing |
ordinary, trivial, familiar, natural |
| Mitigate |
alleviate, relieve, lessen, assuage |
augment, enhance, intensify, aggravate |
| Moderate |
limited, reasonable, lenient, temperate |
excessive, extravagant, violent, vehement |
| Modest |
reserved, unpretentious, humble, courteous |
audacious, arrogant, pompous, vain |
| Molest |
pester, harass, vex, misbehave |
console, soothe, comfort, cheer |
| Mollify |
appease, assuage, relieve, mitigate |
irritate, infuriate, aggravate, exasperate |
| Momentous |
notable, eventful, consequential, stirring |
trivial, insignificant, commonplace, immaterial |
| Monotonous |
irksome, tedious, humdrum, insipid |
varied, pleasant, appealing, captivating |
| Morose |
surly, sulky, sullen, depressed |
sprightly, animated, buoyant, blithe |
| Multitude |
crowd, throng, mass, swarm |
minority, handful, paucity, scarcity |
| Munificent |
liberal, hospitable, benevolent, kind |
frugal, penurious, moderate, economical |
| Murky |
dusky, dreary, dismal, bleak |
bright, shining, luminous, radiant |
| Mutinous |
recalcitrant, insurgent, unruly, revolutionary |
submissive, faithful, compliant, loyal |
| Mutual |
joint, identical, correlative, reciprocal |
separate, distinct, divergent, individual |
